package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.entity.SetmealDish;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {

    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private DishService dishService;



    /**
     * 修改菜品
     * @param dishDto
     */
    @Override
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);
        //清理当前菜品中的口味数据dish_flavor中的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());
        dishFlavorService.remove(queryWrapper);
        //添加当前提交过来的口味数据，dish_flavor中的insert操作
       List<DishFlavor> flavors = dishDto.getFlavors();
        flavors =  flavors.stream().map((item)->{
        item.setDishId(dishDto.getId());
        return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);

    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息，从dish表中查询
        Dish byId = this.getById(id);
        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(byId,dishDto);
        //查询当前菜品对应的口味信息。从dish_flavor中查询
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,byId.getId());
        List<DishFlavor> list = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(list);
        return dishDto;
    }

    /**
     * 新增菜品，同事保存对应的口味数据
     * @param dishDto
     */
    @Transactional
    @Override
    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品的基本信息到菜品表dish
        this.save(dishDto);
        //菜品的id
        Long id = dishDto.getId();
        //菜品的口味
        List<DishFlavor> flavors = dishDto.getFlavors();

        flavors = flavors.stream().map((item)->{
           item.setDishId(id);
           return item;
       }).collect(Collectors.toList());

       //保存菜品口味数据到口味表dish_flavor
        dishFlavorService.saveBatch(flavors);



    }
}
